Sporangia globose or ovoid to ellipsoid or oblong, erect or sometimes inclined or even nodding.
Its form is that of an ellipsoid, with a major axis 26 millimetres in length, while the minor axis measures 11 millimetres.
Newton showed that an ellipsoid of revolution should differ from a sphere by a compression of 1/230.
The form of the latter is at first globular, then ellipsoid, and more or less curved.
Similarly, the dielectric constants of a non-conducting crystal may be expressed by a sphere, spheroid or ellipsoid.
Therefore the surface is an ellipsoid of revolution having A and B as foci.
Of the two eggs, one is of an ovoid form, having much the shape of a hen's egg; and the other is an ellipsoid.
ellipsoid, a surface bearing the same sort of relation to a spherical surface as an ellipse bears to a circle.
The longer axis of the ellipsoid bears to the shorter the proportion of 5 : 4.
A surface expressing the optical relations of such crystals is thus an ellipsoid of revolution about the optic axis.